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Aspheric Stitching Interferometer
Jan 2009
QED Technologies Inc.Request Info
ROCHESTER, N.Y., Jan. 12, 2009 – QED Technologies Inc. has released the Aspheric Stitching Interferometer (ASI) metrology system to measure steep aspheres.

ASI-photo.jpgThe ASI measures aspheres with as much as 1000 waves of departure from the best fit sphere without the use of null lenses or computer-generated holograms, reducing the lead time for producing aspheres.

It is based on the company’s subaperture stitching technology and is complemented by its patent-pending Variable Optical Null technology, a programmable opto-mechanical subsystem that generates a wavefront closely matching the surface of the asphere subaperture being measured.

It takes high resolution subaperture measurements over the entire optical surface and the results are stitched together to form a full aperture map of the asphere being tested.

For more information, visit:

QED Technologies Inc.
1040 University Avenue
Rochester, NY 14607 
Phone: (585) 256-6540
Fax: (585) 256-3211


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ASIaspheresaspheric stitching interferometercomputer-generated hologramsmetrologymetrology systemnull lensesphotonicsProductsQED Technologies Inc.Steep AspheresSubaperture MeasurementSubaperture Stitching TechnologyTest & MeasurementVariable Optical Null Technology

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